A forming die for a rod-shaped metal

Abstract

The utility model provides a kind of forming die of bar metal, specifically related to metal forming technical field, to solve the technical problem that the existing technology roller can only be bitten into by the outer edge of molybdenum bar bottom surface, and the small contact area of biting in is prone to crack.The utility model includes first set body, first set body is hollow elastomer, the upper of first set body is equipped with second set body, the inner diameter of first set body is greater than the inner diameter of second set body, and first set body is connected with second set body by elastic link-up sleeve body;The inner side of the bottom end of first set body is sealed and connected with lower end sleeve, and the inner side of second set body is sealed and connected with upper end sleeve;Upper end sleeve, link-up sleeve body, first set body and lower end sleeve form working inner cavity.The utility model is connected by the link-up sleeve body transition between first set body and second set body, so that molybdenum bar blank bottom surface is bitten into by roller through slope, and the larger contact area of biting in avoids heat loss fast, and reduces crack risk.

Description

Technical Field

[0001] This utility model relates to the field of metal forming technology, and more specifically, to a forming mold for rod-shaped metal. Background Technology

[0002] Molybdenum rod blanks are often prepared using powder metallurgy. Molybdenum powder is loaded into a molding die, the open end of the die is sealed, and the sealed die is placed in an isostatic press with liquid as the medium for pressing to obtain a molybdenum rod blank. The molybdenum rod blank is then sintered at high temperature to obtain a sintered molybdenum rod blank. The molybdenum rod blank is then rolled to obtain molybdenum rods with higher density and more uniform structure, and then processed into various products as needed.

[0003] However, existing rolling processes involve applying pressure to the surface of a molybdenum billet using a pair of rolls to induce plastic deformation, resulting in molybdenum billets with higher density and more uniform microstructure. However, because the die is a cylindrical sleeve, and the bottom surface of the molybdenum billet is perpendicular to its side surface, the rolls can only bite into the billet through the outer edge of its bottom surface. This small contact area leads to rapid heat loss, making it prone to cracking and affecting the quality of the molybdenum billet. Utility Model Content

[0004] The purpose of this invention is to provide a forming die for rod-shaped metal, which can increase the contact area between the roll and the molybdenum billet, avoid rapid heat loss and cracking, and improve the quality of the molybdenum billet.

[0005] The embodiments of this utility model are achieved through the following technical solutions:

[0006] A forming mold for a rod-shaped metal includes a first sleeve, which is a hollow elastic body. A second sleeve is provided above the first sleeve. The inner diameter of the first sleeve is larger than the inner diameter of the second sleeve. The first sleeve and the second sleeve are connected by an elastic connecting sleeve. A lower end sleeve is sealed to the inner side of the bottom of the first sleeve, and an upper end sleeve is sealed to the inner side of the second sleeve. A working inner cavity is formed between the upper end sleeve, the connecting sleeve, the first sleeve, and the lower end sleeve.

[0007] In some embodiments, the inner wall of the connecting sleeve is a tapered slope and its two ends are smoothly connected to the first sleeve and the second sleeve, respectively.

[0008] In some embodiments, the inclination angle of the tapered inclined surface on the inner wall of the connecting sleeve ranges from 30° to 60°.

[0009] In some embodiments, the inner wall of the connecting sleeve is an arched slope and its two ends are smoothly connected to the first sleeve and the second sleeve, respectively.

[0010] In some embodiments, the lower sleeve and the upper sleeve are bottomed elastic cylinders, and a first fixing block and a second fixing block are respectively sleeved on the inner side of the lower sleeve and the upper sleeve. The outer periphery of the first fixing block and the second fixing block are respectively provided with at least one annular groove. The outer periphery of the first sleeve is provided with a binding member corresponding to the annular groove on the first fixing block, and the outer periphery of the second sleeve is provided with a binding member corresponding to the annular groove on the second fixing block.

[0011] In some embodiments, a rigid sleeve is fitted onto the outside of the first sleeve, the second sleeve, and the connecting sleeve, and the inner wall of the rigid sleeve is in contact with the outer wall of the first sleeve, the second sleeve, and the connecting sleeve. Multiple through holes are evenly arranged on the rigid sleeve.

[0012] In some embodiments, the rigid sleeve has a plurality of through holes evenly distributed around the corresponding position of the connecting sleeve.

[0013] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0014] 1. This utility model provides a connecting sleeve between the first sleeve and the second sleeve, so that a transitional conical slope is formed between the outer edge of the bottom surface of the molybdenum rod and the side curved surface. The bottom surface of the molybdenum rod blank and the rolling roll bite into the molybdenum rod through this slope. The bite-in contact area is larger, which avoids rapid heat loss, reduces the risk of cracking, and improves the quality of the molybdenum rod blank.

[0015] 2. This utility model provides support for the first sleeve, the second sleeve, and the connecting sleeve through a rigid sleeve, limiting radial expansion and ensuring dimensional accuracy. Multiple through holes evenly arranged on the rigid sleeve allow the liquid medium to enter during pressing, facilitating pressure transmission. Multiple through holes are evenly distributed around the corresponding positions of the connecting sleeve on the rigid sleeve, enabling the liquid medium to apply pressure to the corresponding pressing positions of the connecting sleeve. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a forming mold for a rod-shaped metal provided in Embodiment 1 of this utility model;

[0018] Figure 2This is a schematic diagram of the structure of a forming mold for a rod-shaped metal provided in Embodiment 2 of this utility model.

[0019] Icons: 1. First sleeve; 2. Second sleeve; 3. Connecting sleeve; 4. Lower sleeve; 5. Upper sleeve; 6. Working cavity; 7. First fixing block; 8. Second fixing block; 9. Annular groove; 10. Bundling component; 11. Rigid sleeve; 12. Through hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1

[0026] Please see Figure 1 As shown, the main body of this embodiment is a forming mold for a rod-shaped metal, including a first sleeve 1, which is a hollow elastic body. A second sleeve 2 is provided above the first sleeve 1. The inner diameter of the first sleeve 1 is larger than the inner diameter of the second sleeve 2. The first sleeve 1 and the second sleeve 2 are connected by an elastic connecting sleeve 3. A lower end sleeve 4 is sealed and fitted inside the bottom end of the first sleeve 1, and an upper end sleeve 5 is sealed and fitted inside the second sleeve 2. A working inner cavity 6 is formed between the upper end sleeve 5, the connecting sleeve 3, the first sleeve 1, and the lower end sleeve 4.

[0027] Furthermore, the inner wall of the connecting sleeve 3 is a tapered slope and its two ends are smoothly connected to the first sleeve 1 and the second sleeve 2 respectively.

[0028] Furthermore, the inclination angle of the conical inclined surface on the inner wall of the connecting sleeve 3 is 60°.

[0029] It is worth mentioning that in the embodiment, the first sleeve 1, the connecting sleeve 3 and the second sleeve 2 are integrally formed and connected, and all of them are made of rubber.

[0030] In this process, the first sleeve 1 and the second sleeve 2 are connected and transitioned through the connecting sleeve 3, so that a transitional conical slope is formed between the outer edge of the bottom surface of the molybdenum rod and the side curved surface. The bottom surface of the molybdenum rod blank and the rolling roll bite into the molybdenum rod through this slope. The bite-in contact area is larger, which avoids rapid heat loss, reduces the risk of cracking, and improves the quality of the molybdenum rod blank.

[0031] Furthermore, the lower sleeve 4 and the upper sleeve 5 are bottomed elastic cylinders. The inner sides of the lower sleeve 4 and the upper sleeve 5 are respectively fitted with a first fixing block 7 and a second fixing block 8. The outer periphery of the first fixing block 7 and the second fixing block 8 are respectively provided with at least one annular groove 9. The outer periphery of the first sleeve 1 is provided with a binding member 10 corresponding to the annular groove 9 on the first fixing block 7, and the outer periphery of the second sleeve 2 is provided with a binding member 10 corresponding to the annular groove 9 on the second fixing block 8.

[0032] The binding member 10 and the annular groove 9 work together to bind and seal the first sleeve 1 and the second sleeve 2 to the lower sleeve 4 and the upper sleeve 5, respectively.

[0033] Furthermore, a rigid sleeve 11 is fitted onto the outside of the first sleeve 1, the second sleeve 2, and the connecting sleeve 3, and the inner wall of the rigid sleeve 11 is in contact with the outer wall of the first sleeve 1, the second sleeve 2, and the connecting sleeve 3. A plurality of through holes 12 are evenly arranged on the rigid sleeve 11.

[0034] Furthermore, the rigid sleeve 11 has a plurality of through holes 12 evenly distributed around the corresponding position of the connecting sleeve body 3.

[0035] The rigid sleeve 11 provides support for the first sleeve 1, the second sleeve 2, and the connecting sleeve 3, limiting radial expansion and ensuring dimensional accuracy. Multiple through holes 12 evenly arranged on the rigid sleeve 11 allow the liquid medium to enter during pressing, facilitating pressure transmission. The rigid sleeve 11 also has multiple through holes 12 evenly distributed around the corresponding positions of the connecting sleeve 3, enabling the liquid medium to apply pressure to the corresponding pressing positions of the connecting sleeve 3.

[0036] Example 2

[0037] Please see Figure 2 As shown, in this embodiment, unlike the above embodiments, the inner wall of the connecting sleeve 3 is an arched slope and its two ends are smoothly connected to the first sleeve 1 and the second sleeve 2 respectively, so that the outer edge of the bottom surface of the molybdenum rod and the side curved surface form a transition arched arc surface. The bottom surface of the molybdenum rod blank and the rolling roll bite into the molybdenum rod through the arched arc surface. The bite contact area is larger, which avoids rapid heat loss, reduces the risk of cracking, and improves the quality of the molybdenum rod blank.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A forming die for a rod-shaped metal, characterized in that, The system includes a first sleeve (1), which is a hollow elastic body. A second sleeve (2) is provided above the first sleeve (1). The inner diameter of the first sleeve (1) is larger than the inner diameter of the second sleeve (2). The first sleeve (1) and the second sleeve (2) are connected by an elastic connecting sleeve (3). A lower end sleeve (4) is sealed inside the bottom end of the first sleeve (1), and an upper end sleeve (5) is sealed inside the second sleeve (2). A working inner cavity (6) is formed between the upper end sleeve (5), the connecting sleeve (3), the first sleeve (1), and the lower end sleeve (4).

2. The forming die for a rod-shaped metal according to claim 1, characterized in that, The inner wall of the connecting sleeve (3) is a tapered slope and its two ends are smoothly connected to the first sleeve (1) and the second sleeve (2) respectively.

3. The forming die for a rod-shaped metal according to claim 2, characterized in that, The inclination angle of the conical inclined surface on the inner wall of the connecting sleeve (3) ranges from 30° to 60°.

4. The forming die for a rod-shaped metal according to claim 1, characterized in that, The inner wall of the connecting sleeve (3) is an arched slope and its two ends are smoothly connected to the first sleeve (1) and the second sleeve (2) respectively.

5. The forming die for a rod-shaped metal according to claim 1, characterized in that, The lower sleeve (4) and the upper sleeve (5) are bottomed elastic cylinders. The inner sides of the lower sleeve (4) and the upper sleeve (5) are respectively fitted with a first fixing block (7) and a second fixing block (8). The outer periphery of the first fixing block (7) and the second fixing block (8) are respectively provided with at least one annular groove (9). The outer periphery of the first sleeve (1) is provided with a binding member (10) corresponding to the annular groove (9) on the first fixing block (7), and the outer periphery of the second sleeve (2) is provided with a binding member (10) corresponding to the annular groove (9) on the second fixing block (8).

6. The forming die for a rod-shaped metal according to claim 1, characterized in that, The first sleeve (1), the second sleeve (2) and the connecting sleeve (3) are fitted with a rigid sleeve (11). The inner wall of the rigid sleeve (11) is in contact with the outer wall of the first sleeve (1), the second sleeve (2) and the connecting sleeve (3). A plurality of through holes (12) are evenly arranged on the rigid sleeve (11).

7. A forming die for a rod-shaped metal according to claim 6, characterized in that, The rigid sleeve (11) has a plurality of through holes (12) evenly distributed around the corresponding position of the connecting sleeve (3).

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